Finding the Fourth Proportional to 664,935,521.20, 997,403,281.80 and 302,138,465.20
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Solution
The fourth proportional to 664,935,521.20, 997,403,281.80 and 302,138,465.20 is: 453,207,697.80
Step by Step Solution
- Step 1: Write the proportion equation
664,935,521.20 : 997,403,281.80 = 302,138,465.20 : x - Step 2: Convert to fraction form
664,935,521.20/997,403,281.80 = 302,138,465.20/x - Step 3: Cross multiply
664,935,521.20x = 997,403,281.80 × 302,138,465.20 - Step 4: Simplify right side
664,935,521.20x = 301,353,896,748,495,040 - Step 5: Solve for x
x = 301,353,896,748,495,040/664,935,521.20 - Step 6: Final answer
x = 453,207,697.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.